1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23/*	  All Rights Reserved  	*/
24
25/*
26 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
27 * Use is subject to license terms.
28 */
29#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.6	*/
30/*
31 * convert uid to login name; interface to getpwuid that keeps up to USIZE1
32 * names to avoid unnecessary accesses to passwd file
33 * returns ptr to NSZ-byte name (not necessarily null-terminated)
34 * returns ptr to "?" if cannot convert
35 */
36
37#include <stdio.h>
38#include <sys/types.h>
39#include <sys/param.h>
40#include "acctdef.h"
41#include <pwd.h>
42
43static int usize1;
44static struct ulist {
45	char	uname[NSZ];
46	uid_t	uuid;
47} ul[USIZE1];
48
49char *strncpy();
50
51char *
52uidtonam(uid)
53uid_t	uid;
54{
55	register struct ulist *up;
56	struct passwd *getpwuid();
57	register struct passwd *pp;
58
59	for (up = ul; up < &ul[usize1]; up++)
60		if (uid == up->uuid)
61			return(up->uname);
62	setpwent();
63	if ((pp = getpwuid(uid)) == NULL)
64		return("?");
65	else {
66		if (usize1 < USIZE1) {
67			up->uuid = uid;
68			CPYN(up->uname, pp->pw_name);
69			usize1++;
70		}
71		return(pp->pw_name);
72	}
73}
74